Hebrews 5:9-10

5:9 And by being perfected in this way, he became the source of eternal salvation to all who obey him, 5:10 and he was designated ¹  by God as high priest in the order of Melchizedek. ² 

Hebrews 5:13-14

5:13 For everyone who lives on milk is inexperienced in the message of righteousness, because he is an infant. 5:14 But solid food is for the mature, whose perceptions are trained by practice to discern both good and evil.

[5:10]  ¹ tn Grk “having been designated,” continuing the thought of Heb 5:9.

[5:10]  ² sn The phrase in the order of Melchizedek picks up the quotation from Ps 110:4 in Heb 5:6.